First post. I'm still learning so be gentle. I have a 91 Jeep YJ 6 cyl 4.0 automatic. Jeep has been running fine until 3 nights ago and hasn't started since. I went to start it and it acted strange. Almost like the ignition hung in the on position and kept starting. I turned it off and then it hasn't start since. Cranks fine but no start. (Actually ignition still seems to be hanging some in case that could be the problem)
I have test for spark coming out of the coil and have spark. I have pulled spark plug wires #1 and #2 and have spark coming out of distributor. It is more like a slow pulse spark and seems a little weak, but I do have spark.
The CEL flashes as normal and fuel pump kicks on to prime as normal. I have what seems to be plenty of fuel at the fuel rail.
I want mention, I had problems about a year ago with my jeep dying when I slowed down and them some times it would start. Same thing, had fuel and had spark. Even sent the computer off to be checked and it checked out fine. Finally had it towed to a guy and he replaced ignition coil and I'm not sure if he replaced the camshaft position sensor inside distributor or not, but it looks new. I think he mentioned setting the compression stroke #1 at TDS but wouldn't swear to it. Anyways, got it back and have had no problems since, until 3 days ago.
Problem seems like the same exact thing. I do have spark and I've done the ohm reading test on the crankshaft position sensor and it reads fine.
Any ideas would be much appreciated. I also checked all fuses under the hood and they are fine. I was thinking about Making sure the compression stroke for #1 was still sitting at top dead center (TDS) and checking to see if the rotor under distributor cap is sitting at the 5:30 or so position after I set at TDS. I understand that's where it's supposed to be when adjusted at 0 TDS. I am wondering if that has possibly skipped and is a little off causing me an issue. If that's even possible. I'm thinking that might have been the problem last time, but it could have been a weak coil I guess or maybe even the camshaft position sensor if that was even replaced. (Tried calling him a couple times but haven't been able to reach him)
Again, any advice from any of you experienced pros would be great! Thanks in advance.
I have test for spark coming out of the coil and have spark. I have pulled spark plug wires #1 and #2 and have spark coming out of distributor. It is more like a slow pulse spark and seems a little weak, but I do have spark.
The CEL flashes as normal and fuel pump kicks on to prime as normal. I have what seems to be plenty of fuel at the fuel rail.
I want mention, I had problems about a year ago with my jeep dying when I slowed down and them some times it would start. Same thing, had fuel and had spark. Even sent the computer off to be checked and it checked out fine. Finally had it towed to a guy and he replaced ignition coil and I'm not sure if he replaced the camshaft position sensor inside distributor or not, but it looks new. I think he mentioned setting the compression stroke #1 at TDS but wouldn't swear to it. Anyways, got it back and have had no problems since, until 3 days ago.
Problem seems like the same exact thing. I do have spark and I've done the ohm reading test on the crankshaft position sensor and it reads fine.
Any ideas would be much appreciated. I also checked all fuses under the hood and they are fine. I was thinking about Making sure the compression stroke for #1 was still sitting at top dead center (TDS) and checking to see if the rotor under distributor cap is sitting at the 5:30 or so position after I set at TDS. I understand that's where it's supposed to be when adjusted at 0 TDS. I am wondering if that has possibly skipped and is a little off causing me an issue. If that's even possible. I'm thinking that might have been the problem last time, but it could have been a weak coil I guess or maybe even the camshaft position sensor if that was even replaced. (Tried calling him a couple times but haven't been able to reach him)
Again, any advice from any of you experienced pros would be great! Thanks in advance.